Implementing AbstractFullDistribZkTestBase

[Markus Jelsma]

Hello,

I have several implementations of AbstractFullDistribZkTestBase of Solr 5.3.0. 
Sometimes a test fails with either "There are still nodes recoverying - waited 
for 30 seconds" or "IOException occured when talking to server at: 
https://127.0.0.1:44474/collection1";, so usually at least one of all test 
fails. These are very simple implementations such as :

  @Test
  @ShardsFixed(num = 2)
  public void testSomeStuff() throws Exception {
    waitForThingsToLevelOut(30);
    
    del("*:*");
    indexDoc("input 1", "user_1");
    indexDoc("input 1", "user_2");
    indexDoc("input 2", "user_1");
    indexDoc("input 2", "user_2");
    commit();

Any idea on how to get rid of the nodes recovering issue?
Markus